Mentis Thanao& 
(7) Thanaos martialis, Scudder, Plate XLV 111 , Fig. 4, $ ; 
Plate VI, Fig. 37, chrysalis (Martial’s Dusky-wing). 
Butterfly.— The upper side of the wings is paler than in most 
species, and has a distinctly purplish-gray cast. The fore wings 
are crossed by irregular bands of dark spots. The hind wings 
on the outer half are profusely mottled with small pale spots. 
All the light spots are repeated on the under side of both wings, 
and are more distinct on this side than on the upper. Expanse, 
1.25-1.40 inch. 
Early Stages. —These are partly known. The caterpillar feeds 
on Indigofer a and Amarantus. 
The species ranges from Massachusetts to Georgia, and west¬ 
ward to Missouri and New Mexico. 
(8) Thanaos juvenalis, Fabricius, Plate XLVIII, Fig. 11, ? ; 
Plate VI, Fig. 33, chrysalis (Juvenal’s Dusky-wing). 
Butterfly.— Larger than the preceding species. The wings 
have a number of translucent spots arranged as a transverse 
series beyond the middle of the wing. They are far more dis¬ 
tinct and larger in the female than in the male. The under side 
of the wings is paler than the upper side, and profusely but 
indistinctly marked with light spots. Expanse, 1.35-1.60 inch. 
Early Stages.— For a full knowledge of these the reader may 
consult the pages of “The Butterflies of New England.” The 
caterpillar feeds on oaks and leguminous plants of various 
species. 
This insect ranges from Quebec to Florida, and westward 
as far as Arizona, where it appears to be common. 
(9) Thanaos petronius, Lintner, Plate XLVIII, Fig. 7, $ (Pe- 
tronius’ Dusky-wing). 
Butterfly. — Allied in size to the preceding species, but the 
translucent spots of the transverse band are not, as in that 
species, continued toward the inner margin, but terminate at 
the first median nervule. The outer third of the primaries is 
pale, the inner two thirds very dark. The under side of the 
wings of the male is uniformly dusky, slightly, if at all, marked 
with lighter spots. The under side of the wings of the female 
is less distinctly marked with light spots than is the case in 
allied species. Expanse, 1.50-1.75 inch. 
Early Stages. — Unknown. 
The species has thus far been found only in Florida. 
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